import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
@WebServlet("HeLLow.db")
public class HelloAjaxServar extends HttpServlet {
    @Override
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        super.service(req, resp);
        String msg = "Hello.ajax";
        //把数据装换为json字符串
        PrintWriter out = resp.getWriter();
        out.write(msg);
        out.flush();
        out.close();
    }
}
